Maximum-demand meter



W. G` MYLIUS.

Jan. 16, 1923. 1,442,085.'

MAXIMUM `DEMAND METER.

FILED MY l3.1l8. f 2 SHEETS-SHEET 1.

Clasif driven 32 WITNEssEs; iNvENToR Jan. 16, 1923. Y. 1,442,085.

r wps. MYLIUS.

MAXIMUM DEMAND METER.

FILED MAY 13,1918. A

wlTNEssEsg We Y' f' /v/ MJ y 9 I 45 substantially Patented Jan. 16, 1923. l

UNITED STATES PAiEiriA OFFICE..

WALTER G. IIYLIUs, or wILK'INsRURG, PENNSYLVANIA, AssIGNORTO wRsTING- HOUSE ELECTRIC a MANUFACTURING COMPANY, A CORPORATION OF PENNSYL- VANIA.

. Application filed May 13,

To all lwhom it Amay concern:

Be it known that I, VALTER Gr. MYLIUS, a citizen of the United States, and a resident of lilkinsburg, in the county of Allegheny and State of Pennsylvania, have Invented a i new and useful lmprovement in Mailrimum- Demand Meters, of which the following is a specification. i

My invention relates to electrical vmeas'.- uring instruments and particularly to maximumdemand meters. l One object -of my invention is to provide a meter, of the above-indicated character, that shall be adapted to indicate, at all times, the integrated periodic demand ofvenergy traversing the same.v y

Another object of my invention is to provide means for successively resetting the indicating device of a maximum-demand meter at rates corresponding lto the rate of consumption of energy during predetermined previous periods of time. A j

A further object of my inventionis to provide a meter of the above-indicated characterthat shall be relatively simple and inexpensive to construct 'and `accurate in its operation.

.In practicingv myV invention, Improvide a motor meter for actuating one elementof the differential device. A plurality of gear mechanisms arel adapted to be actuated "by a constant-speed device, such as a clock, and are so periodicallyset or controlled bythe motor meter and so successively connected to v the other element of the differentialdevice that a pointer, which is connected to the planetary element of the differential device,

is 'caused to indicate, at all times, the difference between the integrated' value o-fthc power traversing'the meter and the inte.-

grated value of the powerthat traversed the meter during some previousv period of time.

lf the number of geardevites` is relatively large, the resetting ofthe pointer may be continuous, and thus, .the Vpointer may indicate, at all times,.tlie true periodic demand yof energy traversingthe meter.A Y

.Figure 1 of the accompanying drawings is a diagrammatic top plan view of a meas'- uring instrument embodyingniy invention; QFig. 2 is a diagrammatic side elevational view of a meter shownin Fig. 1, Figs. 3 and 4 are diagrammatic views illustrating one Aof the reset-ting devices of the meter in its MAXIMUMDEMAND MRTRR.

1918. seriaiNc. 234,097'.

two positions of operation, and Fig. 5 is a perspective view of the instrument embodyf 13' which constitutes the planetary member f of the device. rlf'he gear wheels 10 andv 12 are'loosely mounted upon a shaft 14 `upon which an arm 15 and a pointer 16 are secured. The gear wheel 13 is "mounted on the arm 415 and engages the gearwheels 10 and `12. A pointer 17 is loosely mounted on theshaft 14 Vand is adapted to be engaged by a projection 18y on the pointer 16 for the purpose of actuating the'pointer 17 in one direcy tion only. y A bevel pinion 19 is operatively connected to' the `bevel gear wheel 12.` and is mounted on a shaft 20 upon which gear I wheels 21 and 22 are also mounted. K

A constant-speed device 23, such asa clock, is adapted to actuate 'a shaft 24 upon which lare mounted gear wheels 25 and 26 vand cam members 27, and 28. Cradle members 29 and 30 arel pivotally mounted on the shaft 31 and have mounted thereon gear wheels 32 and 33,r respectively, and Asegmental gear wheels 34 and 35, respectively. lThe cradleI members y29'aiid 30 are adapted toengage the cam members 27 and 28 which are so positioned that the cradle members 29 vand 30 are moved successively to their various posi tions. `That is, the cradle member 29 is in lits lowermost position when the cradle member-.30 is'in its uppermost position. If plurality of cradle members are used, the 'cam members should be disposed equi-dis tant about the v'shaft 24. rhe gear wheels 32 and 33 are adapted to engage the-gear wheels 7 and 8, respectively. Tliefsegmental the idler gear wheel 37. vThe idler gear.;l

wheels 36 and 37 are-mounted on .a shaftr38 and engage. the gear wheels 21 and 22, .re-

spectively, that are mounted on the shaft 20. V

The motor meter 1 so-.actuates the pointer 16, through the differential device 11, that ioo gear, wheel 34 is adapted to engage the gear it moves a distance in a clockwise direction corresponding to the integrated power traversing the meter. Since the shaft 2a is actuated by the constant-speed device 23, the cam member 28 will move the cradle 30 to such position t-hat the gear wheel will engage the gear wheel 8. wheel 33 and the segmental gear wheel 35, which are mounted on a common shaft, will be turned a distance proportional to the power traversing the meter i during a predetermined period ot time. After the eXpiration of that period ot time, th'e cani member 28 will be turned to the position shown in Fig. 3 of lthe drawings. ln this position, the segmental gear wheel 35 will operatively connect the gear wheel 26 to the gear wheel 37, and, since the gear wheel 37 engages the gear wheel 22, the constant-speed device 23 will actuate the gear wheel 12 ot the differential device 11 in a counter-clockwise direction through the gear wheel 26, the segmental gear wheel 35, the idler gear wheel 37, the gear wheel 22, the shaft 2O and the pinion 19 an amount proportional to the rate at which power traversed the motor meter 1 during a previous predetermined period ot time. That is, the relative position, with respect to the gear wheel 26, to which the segmental gear wheel 35 was turned by the motor meter,` determines the length et time that the segmental gear wheel 35 will operatively connect the gear wheels 26 and 37. Thus, the Lpointer 16 will move in accordance with'the diii'erence between the present rate of operation of the motor meter 1 and the rate at which it operated during a previous predetermined interval of time.

The operation of the cradle 29 vis similar to that set forth with respect to the cradle 30, with the exception that, when the segmental gear wheel 3a is kbeing positioned through the gear wheel 7 and the gear wheel 32, the segmental gear wheel 35 is in engagement with the gear wheel 37 and, conversely, when the segmental wheel 3a is in engagement with the gearwvheel 25 and the gear wheel 36, the segmental gear wheel 35 is being set through the gear wheel Sand gear wheel Thus, since the shalt 2() is, at all times, being' actuated through the one or the other of the Agear wheels 21 and 22 and, since it is actuated in accordance with the rate of consumption of power during previous predetermined periods of time, the differential device 11 will cause the pointer 16 to indicate, at all times, the periodic demand of energy to be measured, and a pointer 17 will indicate the maximum value of this lperiodic kdemand of energy.

My invention is not limited to the particular structure illustrated as it may be variously modified without departing from the spirit and sco-pe of the invention, as set forth, in the appended claims.

rlfhus, the gear I claim as my invention:

1. ln a measuring instrument, the combi.- nation with a motor meter, a constant-speed device and a diiierential device, of means wherebythe motor meter actuatesone element of the differential device, and a plurality of means actuated by the constantspeed device and controlled bythe motor meter for actuating successively the other element of the differential device.

2. .In a measuring instrument, the combination with a motor meter, a constantspeed device and a pointer, of means whereby the motor meter actuates the pointer in one direction, and a plurality of lmeans actuated by the constant-speed device and controlled by the motor meter for successively actuating' the pointer in the opposite direction. i

3. In a measuring instrument, the combination with a motor meter and a constantspeed device, of means actuated in accordance with the speed of the motor meter, means recurrently actuated by the constantspeeddevice and recurrently controlled by the motor meter, and means for indicating the differential action oi the said two means.

4. In a measuring instrument, the combination with a motor meter and a constantspeed device, of an actuated means `operatively connected to the motor meter, a second actuated means, a plurality of means actuated by the controlled by the motormeter forl successively actuating the. second-actuated means,

and means orindicating the differential action of the said two actuated means.

5. The combination with a differential device and a pointer operatively connected thereto, of a motor meter for actuating one member of the diierential device, a constant-speed device, and a plurality of means actuated by the constant-speed device for successively actuating the other member of the differential device, said means severally being adapted to move a distance controlled by the rate of speed of the motor meter du ring previous periods of time.

6. The combination with a dilierential device and a pointer operatively connected thereto, of a motor meter for actuating one member ot the differential etant-speed device, and a plurality oit' segconstant-speed device andA device, a con-` mental gear wheels adapted to successively connect the constant-speed device to the other member of the differential device for periods of time corresponding to the rate of speed of the motor meter during yprevious predetermined periods of time.

In a measuring instrument, thecombination with a motor meter, a constant-speed device, a differential device and a pointer operatively connected to the differential AYdevice, of means whereby the motor meter actuates one member of the diii'erential device,

a plurality of cam members actuated by the constant-speed device, a plurality of pivotally-mounted members actuated by the cam members, segmental gear wheels mounted on the pivotally-mounted members, and means for successively connecting the segmental gear wheels between thel constant-speed device and another member of the dierential device, said segmental gear wheels being adapted to be so turned by the motor meter that the time of engagement with the constant-speed device will be proportional to the rate of speed of the motor meter during a predetermined previous period of time.

8. In a measuring instrument, the combination with a motor meter, a constant-speed device, a differential device and a pointer actuated thereby, of means whereby the motor actuates one member of the differential device, and a plurality of means ac tuated by the constant-speed device and so controlled by the motor meter that the other member ofthe dilerential device isfactuated at a rate proportionalto the rate of advance of the rst mentioned differential member over some previous interval of time.

9. In a measuring. instrument, the combination with a motor meter, a constant=speed device and a differential device, 'of means whereby the motor meter actuates one element of the diilerential device,l and means actuated by the constant-speed device and controlled by the motor meter for actuating successively the other element of the diiierential device an amount proportional to the `rate of advance of the lirst dilierential element over previous intervals ottime.

In testimony whereof, I have hereunto subscribed my name this 30th day of April 1918.

WALTER Gr. MYLIUS. 

